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英語で読む日経サイエンス

In the middle of 2005 the W. M. Keck observatory on Mauna Kea in Hawaii completed an upgrade of one of its giant twin telescopes. By automatically correcting for atmospheric turbulence, the instrument … 続きを読む →

The changing hues of a peacock’s splendid tail feathers have always captivated curious minds. Seventeenth-century English scientist Robert Hooke called them “fantastical,” in part because wettin … 続きを読む →

The rat is on a carousel with clear plastic sides, rotating slowly in a small room. As it looks out through the plastic, it sees markings on the walls of the room from which it can determine its posit … 続きを読む →

The entrance exam to medical school consists of a five-hour fusillade of hundreds of questions that, even with the best preparation, often leaves the test taker discombobulated and anxious. For some w … 続きを読む →

On a sunny spring day one of us (Dixon) entered the London Underground at the Mile End station on his way to Heathrow Airport. Eyeing a stranger, one of more than three million daily passengers on the … 続きを読む →

A little more than three years ago a medical team from Berlin published the
results of a unique experiment that astonished HIV researchers. The German group had taken bone marrow—the source of the … 続きを読む →

Last fall the U.S. preventive services task force dropped a bombshell, arguing that healthy men should stop undergoing a routine blood test as a screen for prostate cancer. An analysis of the best ava … 続きを読む →

For what must have felt like an interminable six months back in 2007, Sabine Begall spent her evenings at her computer, staring at photographs of grazing cattle. She would download a satellite image o … 続きを読む →

Astronomers have known for some 10 years that nearly every large galaxy contains at its core an immense black hole—an object having such intense gravity that even light cannot escape. The death of s … 続きを読む →

On a clear November morning in 1964 the Royal Canadian Navy’s Cape Scott embarked from Halifax, Nova Scotia, on a four-month expedition. Led by the late Stanley Skoryna, an enterprising McGill Unive … 続きを読む →

Matt is a history teacher. His twin brother, Greg, is a drug addict. (Their names have been changed to protect their anonymity.) Growing up in the Boston area, both boys did well in high school: they … 続きを読む →

The raging combatants form a blur on all sides. the scale of the violence is almost incomprehensible, the battle stretching beyond my field of view. Tens of thousands sweep ahead with a suicidal singl … 続きを読む →

This month NASA plans to launch its latest and most sophisticated mission ever to the Red Planet: the Mars Science Laboratory. After a dramatic landing in Gale Crater using a skycrane for the final de … 続きを読む →